Model 250P for 1/32"
Contents
1. CUIS TAE COST OF STAREAEAG ANNAN NUMBERALL STAMP TOOL CO INC USER MANUAL amp PARTS LIST MODEL 250P 1 32 1 8 Characters S N P O BOX 187 1 HIGH ST www numberall com TEL 207 876 3541 SANGERVILLE ME 04479 office numberall com FAX 207 876 3566 OPTIONAL HOT STAMPING EQUIPMENT Numberall manufactures hot stamping versions of the Models 70 80 83 85 23 and 50 Numbering Heads Due to their hot stamping capabilities the Model numbers are thereby referred to as Models 270 280 283 285 223 and 250 respectively Since field applications and press equipment vary most hot stamping numbering heads are individually modified to suit customer requirements All hot stamping numbering heads are designed to allow for thermal expansion Various models have unique features to minimize friction and aid in character changes The Models 280 285 and 283 have insulated turning knobs so that the wheel shaft can be rotated The Model 283 selector knob has holes drilled in it An insulated pin inserted into the holes allows for rotation of the selector knob The Model 250 has rollers on the coil return spring pins to minimize friction A pick is also supplied to preset the wheels Inserting the pick between each wheel and pushing can individually rotate the wheels The hot stamping equipment when purchased includes the heating elements a cord and switch A temperature controller is2. 1 2 Mount the numbering machine to the press Design and mount a bracket for the miniature roller valve so that the ram will activate the valve on the upstroke Make sure the valve does not open before the numbering machine leaves the material surface Bearing on the roller or directly on the valve button can activate the valve Assemble the tubing so that the air flows from the supply through the valve and to the air cylinders Make sure the air lines are protected from the press Check all fittings they should be air tight Adjust the length of the piston rods so that the numbering wheel clicks into position just as the cylinders reach the end of the stroke Loosening the jam nut and rotating the piston rod adjust the piston rod Tighten the jam nut after adjustment THIS HAS BEEN DONE PRIOR TO SHIPPING SO ADJUSTMENT MAY NOT BE REQUIRED Adjust the press so that the Model 250P numbering machine will clear the table at all times during the ram stroke Revision 2 0 6 Crack the adjustable speed control open and cycle the press Keep both hands completely clear of the table area when operating the press If the piston rods fail to fully advance the actuating arms advance the wheel manually to the next indent Open the speed control further and cycle the press Continue this process until the numbering machine advances properly If the piston rods push unequally adjust the lengths as per the previous instructions If you ha
3. 14 After aligning the holes in the arm and the pawl start the threaded end of the actuating pawl shaft 50 15 9 through the aligned holes Carefully force the pin out of the actuating pawl spring with the actuating pawl shaft Ease the spring onto the shaft as it is advanced Some models have a spacer between the actuating pawl and the actuating arms 15 Securely tighten the actuating pawl shaft 16 Rotate the actuating pawl in the direction of increasing spring tension until it reaches a stop Using flexible wire fasten the actuating pawl to the actuating arm cross head 17 Slide the actuating arms between the frame legs The straight edge of the arm will be up 18 Start the wheel shaft 50 15 18 through the frame leg from the right Align the right actuating arm and advance the shaft through the arm and halfway across the space between frame legs 19 Slide the wheels onto the shaft in the original order advancing the shaft when necessary Make sure to remove any burrs on the wheels or actuating arms Use a medium India stone to remove burrs CAUTION the actuating arms are chrome plated and should not be stoned more than is necessary The indent side of the wheels goes on the right 20 The wheel shaft ends should be flush with the frame sides Align the flats on the shaft with the set screws 50 15 20 in the frame legs Securely tighten the set screws 21 Turn the frame over with the retaining pawl block mill cut facing up
4. Never attempt to stamp on a surface unless it is perpendicular along both axes to the Model 250P printing plane Damage to the actuating or retaining pawls can occur if this warning is not heeded Make sure that each number wheel is completely indented before stamping If the wheels are indented properly they should snap or click back into the indent position after being rotated slightly beyond that position Stamping with the wheels between indents can damage the actuating or retaining pawls When adjusting the tripping mechanism make sure the wheels do not begin to rotate while they are still in contact with the work In addition to moving the work rotating the wheels could damage the actuating pawl When adjusting the tripping mechanism make sure the actuating arm does not bottom out on the actuating stop pins It is possible to shear these pins possibly damaging the numbering head Marking Instructions These instructions assume the operator is facing the front side of a press mounted Model 250P Numbering Head The actuating pawl 50 15 10 is on the front side The following procedure adjusts the numbering head to stamp consecutive numbers beginning with the number one Revision 2 0 It is possible to stamp consecutive numbers in two forms The zeros preceding a number may be included or excluded For example the number 25 may be stamped as 000025 or as 25 Including Zeros These instructions include the zer
5. 2 CAUTION Wear safety glasses when disassembling the Model 250P Springs which are part of the head could fly out during disassembly and Cause eye injury Revision 2 0 Remove the loops of the left and right coil return springs 50 15 6 from the left and right coil return spring pins 50 15 7 CAUTION These springs are under considerable tension and should be handled carefully Loosen both left and right coil return spring screws 50 15 8 and remove the springs from the arm bar 50 15 3 Twist a piece of flexible wire around the actuating arm cross head 50 15 2 and the actuating pawl 50 15 10 Pull the actuating pawl far enough toward the cross head so that it clears the wheels Take care not to damage your fingers Remove the three machine screws that hold the retaining pawl spring 50 15 25 Mark the outside of the spring before removing it It is not necessary to remove the pawl block 50 15 23 in order to remove the wheels Remove both wheel shaft set screws Pull the retaining pawls 50 15 21 away from the wheels Slowly push the wheel shaft 50 15 18 out of the frame 50 15 1 Take care not to drop the wheels or the actuating arm Maintain the original wheel order for proper assembly The actuating arms should be treated with care If it is twisted re assembly may not be possible Removing the Pawl Block 50 15 23 1 Remove the two pawl block screws 50 15 24 The pawl bl
6. and the frame legs toward the operator If the retaining pawl block is in place skip instructions 22 through 24 22 Slide the retaining pawls 50 15 21 onto the retaining pawl shaft 50 15 22 in their original order The working end of the unit wheel pawl is wider than the other pawls and must be placed in the proper position 23 Rest the retaining pawl block with the milled cut facing up and toward the operator Rest the retaining pawls with the shaft next to the milled cut and the flat pawl ends up and toward the operator 24 Mate the retaining pawls with their respective slots Position the shaft in the milled cut with its end flush with the pawl block ends Revision 2 0 25 Holding the pawls into their slots turn the pawl block over and insert it into the milled cut in the frame Make sure each pawl rests in between each wheel 26 Evenly tighten the pawl block screws 50 15 24 Make sure the pawls do not bind They should work freely 27 Position the retaining pawl spring 50 15 25 over the retaining pawls with the original side out The spring is not symmetrical and thus is only correctly assembled one way The spring fingers should align with the retaining pawl centers 28 Evenly tighten the retaining pawl spring screws 29 Rest the frame with the front side up and the frame legs toward the operator as in instruction 3 30 Slide the right coil return spring 50 15 6 onto the arm bar 50 15 3 Determine whi
7. ch is the right spring as follows when viewed from the loop end the loop will be on the right hand side of the spring NEVER interchange springs from different Model 250P Numbering Heads 31 Secure the inside end of the spring by tightening the coil spring return screws 50 15 8 32 Rotate the spring loop in the direction of increasing spring torque and slide the loop over the coil return spring pin 50 15 7 CAUTION The springs will be under considerable torque and could rotate rapidly if released 33 Repeat steps 30 31 and 32 for the left coil return spring 34 Remove the flexible wire holding the actuating pawl 35 By hand rotate each wheel away from the actuating pawl until they indent The Model 250P wheels will only rotate in one direction DAMAGE to the pawls can occur if they are forced in the opposite direction 36 Check the operation of the Model 250P Numbering Head The actuating arm should operate smoothly without any binding Revision 2 0 Recommended Spare Parts for Model 250P 1 Set Coil Return Springs 50 15 6 Not required with Air Trip 1 Actuating Pawl 50 15 10 1 Actuating Pawl Springs 50 15 17 2 Retaining Pawls Regular 50 15 21 1 Retaining Pawl Unit 50 15 21 1 Retaining Pawl Spring 50 15 25 Spare wheels should be stocked depending on use and the material being stamped Revision 2 0 OPTIONAL AIR TRIPPING ATTACHMENT An air tripping attachment is available for the Model 250P Au
8. d small enough in diameter to slip through the actuating pawl and shaft holes 6 Position the actuating pawl with the flat surface up and the legs toward the operator Start the pin from the left hand side through the hole in the leg and halfway across the space between the legs 7 Slip the actuating pawl spring 50 15 17 over the pin in such a way that the right angle bend in the spring leg mates with the right angle surfaces between the legs 8 Rotate the other leg of the spring in the direction of increasing spring torque until it catches on the side of the pawl block opposite the flat side 9 Push the pin completely through the spring and into the opposite leg of the actuating pawl 10 Make sure the pin is not longer than the width of the actuating pawl 11 Position the actuating arm with the arm bar in a horizontal position and the straight edges of the arm legs facing down 12 Slide the actuating pawl in between the arm legs with the actuating pawl prongs pointing toward the arm bar and the actuating pawl spring down 13 The actuating pawl must be moved in this position toward the arm bar until the holes in the actuating pawl align with the actuating pawl shaft holes in the arms As the pawl is moved toward the arm bar the spring leg which extends Revision 2 0 toward the arm bar must be rotated in the direction of increasing spring torque and forced against the flat surface between the actuating pawl shaft holes
9. g d 50 15 38 Coil Return Spring Roller Screws 2 reg d 50 15 39 Air Trip Mechanism complete 50 15 40 Air Trip Mechanism Cylinders 2 reg d 50 15 41 Air Trip Mechanism Cylinders Heat Resistant 50 15 42 Air Cylinder Mounting Bars 2 reg d 50 15 43 Air Cylinder Mounting Screws 2 reg d 50 15 44 Air Cylinder Mounting Bar Screws 4 reg d 50 15 45 Air Brass Fittings 6 reg d 50 15 46 Air Speed Control 50 15 47 Air Valve 50 15 48 Air Valve Roller Actuator 50 15 49 Air Valve Speed Control Mounting Bracket 50 15 50 Teflon Tubing NUMBERALL STAMP amp TOOL CO INC BOX 187 HIGH ST SANGERVILLE ME 04479 207 876 3541 FAX 207 876 3566 Model 50 Numbering Machine s 50 15 4 1585 y 50 15 5 XD 50 15 7 50 15 10 50 15 47 QG 50 15 44 50 15 48 50 15 49 50 15 39 ALWAYS SPECIFY SERIAL NUMBER WHEN ORDERING PARTS Numberall Stamp amp Tool Co Inc For extra copies of this manual please call or visit our website P O BOX 187 1 HIGH ST www numberall com TEL 207 876 3541 SANGERVILLE ME 04479 office numberall com FAX 207 876 3566
10. he power and allowing it to cool The heating elements when on are much hotter than the flash point of most solvents 7 Protect heater wires and thermocouple leads These wires are fragile and could easily be broken 8 Make sure the heaters are mounted well into the frame with no parts exposed Exposed heater sections will overheat and could damage the element 9 A CLEAN HEAD IS A MUST A MAINTENANCE SCHEDULE MUST BE DETERMINED SO THAT EXCESSIVE DOWNTIME OR DAMAGE CAN BE AVOIDED When ordering parts or obtaining information always mention the serial number If you have any questions or problems our sales department is at your disposal Revision 2 0 MODEL 250P AUTOMATIC NUMBERING HEAD For 1 32 1 8 Characters Operating Instructions 1 DO NOT DROP OR ABUSE THE MODEL 250P The Model 250P is a precision machine carelessness could damage the pawls or springs When inserting the Model 250P into the press make sure the numbering head frame bears the load The shank aids only to hold the head in the press Stress should not be applied to the shank THE MODEL 250P SHOULD NEVER BE HAMMERED OUT OF THE PRESS The actuating arms 50 15 2 should be facing towards the operator for right side up stamping The wheels in the Model 250P can rotate in only one direction away from the actuating pawl 50 15 10 Damage to the actuating or retaining pawls can occur if the wheels are forced in the wrong direction
11. not included unless purchased as an option An overheated numbering head is not covered by warranty unless wired to our proportional temperature controller Refer to the catalog and price list for additional options to hot stamping Precautions The following precautions should be observed when assembling and operating hot stamping equipment 1 Numberall s hot stamping numbering heads are designed to operate below 350 Fahrenheit Operations at higher temperatures can anneal hardened parts and springs and combust insulating handles 2 At normal operating temperatures metal parts can burn the skin Operational procedures and written warnings should be created and posted to protect the operator 3 Some plastics give off harmful vapors when heated A thorough knowledge of the materials to be stamped is essential 4 Enclosed is a canister of special high temperature grease When cleaning and maintaining the unit LIGHTLY coat the wheel shaft and the outside of the actuating arm with the grease The grease will improve the operation of Revision 2 0 the unit as well as prevent corrosion that can occur with hot stamping units Do not attempt to lubricate with any other lubricant some lubricants will break down and leave deposits on the wheels which can cause the wheels to bind 5 Allow ample warm up time before stamping A large mass of metal will heat slowly 6 Do not attempt to clean a numbering head before disconnecting t
12. o preceding a number 1 Using the pick supplied with the Model 250P rotate the unit wheel which is the right most wheel by inserting the pick between the wheel and pushing on the index plate Rotate it away from the actuating pawl 50 15 10 until the number 1 is at the bottom 2 Rotate the other wheels away from the actuating pawl until the number zero is at the bottom 3 If the tripper assembly and the press are properly adjusted the Model 250P is ready to stamp consecutive numbers Excluding Zeros These instructions exclude the zeros preceding a number 1 The unit wheel is the right most wheel Rotate it away from the actuating pawl 50 15 10 until the number one is at the bottom 2 Rotate the other wheels away from the actuating pawl until the number zero is at the bottom 3 Further rotate the wheels except the unit wheel slowly until it snaps into the next indent At this wheel position a recessed space is downward and hence no impression will be made As the consecutive number increases each wheel will still advance at the proper time Disassembly Instructions The following directions assume the numbering head is resting with the front side up and the frame legs toward the operator The actuating pawl 50 15 10 is on the front side The Model 250P can be disassembled in any convenient position but the directions are for a head in the above location 1 Choose a clean bench to disassemble the Model 250P
13. ock 50 15 23 should lift out The pawl block fits tightly in the frame and it may be necessary to tap it Care should be taken not to bend the retaining pawls 50 15 21 or the retaining pawl shaft 50 15 22 If the retaining pawls are to be removed maintain the original order for re assembly Removing the Actuating Pawl 50 15 10 1 While holding the actuating pawl 50 15 10 to keep it from rotating remove the twisted wire Allow the actuating pawl to slowly rotate relieving spring torque until it strikes the cross head While holding the actuating pawl spring 50 15 17 with two fingers above and below the spring unscrew the actuating pawl shaft 50 15 9 from the arm Revision 2 0 4 Remove the actuating pawl shaft Be careful not to drop the actuating pawl the spring is under tension and could fly out Assembly Instructions 1 When assembling the Model 250P make sure all surfaces are free of dirt and grit 2 CAUTION Always wear safety glasses when assembling the Model 250P The springs to be assembled are under tension and could cause eye injury 3 The following directions assume the numbering head is resting with the front side up and the frame legs toward the operator and the pawl block mill cut is on the rear side 4 If the actuating pawl is already assembled in the actuating arm skip instructions 5 through 16 5 Cut a pin slightly shorter than the outside width of the actuating pawl an
14. ollow cores because of the small tubing diameter 5 The standard air cylinder is single acting and spring returned It has a bumper system to cushion the end of the stroke If the numbering machine is used for hot stamping a heat resistant bumper is required The air cylinders DO NOT REQUIRE LUBRICATION Revision 2 0 Adjustments The following instructions have been done at the factory prior to shipping However if it is necessary to disassemble the following adjustments may have to be performed 1 Adjust the length of the air cylinder rods so that they push evenly Otherwise the resulting twisting motion can bind the numbering machine The rods have been adjusted prior to shipping Do not over tighten the shoulder screw which secures the base of the air cylinder If over tightened the cylinder may bind Also the threads of the shoulder screw must be sealed since they extend into the air chamber This is done at the factory prior to shipping The travel of the air cylinders must be adjusted so that the numbering machine indents or clicks at the end of the cylinder stroke There are no positive stops for the actuating arms in the Model 250P Numbering Machines that are factory equipped with air tripping Assembly Instructions The following general instructions apply to assembling the air tripping attachment Since many options are available and most press installations are customized no detailed directions are available
15. tomatic Numbering Machine This system is advantageous where press design or space limitations makes mechanical tripping cumbersome Basically two small air cylinders mounted to the numbering machine are used to move the actuating arms which move the wheels to the next number A miniature roller valve activated by the movement of the press ram controls air flow to the cylinders The mechanism works on the up stroke of the press Also included is an adjustable speed control valve An air logic control can be supplied which will repeat the same number up to 24 times before allowing the air cylinders to trip the unit The air tripping system is designed for 60 80 psi The cylinders and air plumbing attached to the numbering machine come pre assembled Precautions The following precautions should be observed when assembling and operating the air tripping attachment 1 The actuating arm bar moves very rapidly when the air cylinders extend Keep both hands completely free of that area 2 The air tripping system is designed to operate with a 60 80 psi air supply A filtered line is recommended to prevent any contamination 3 The machine screws that secure the cylinder mounting bars to the frame must remain tight They are assembled at the factory using a thread sealant but should be periodically checked 4 The tubing supplied with the tripping assembly is 1 8 nylon All tubing fittings are the compression type and do not require h
16. ve any problems or require additional instructions please contact our sales office When calling always provide the serial number Revision 2 0 NUMBERALL STAMP amp TOOL CO INC BOX 187 HIGH ST SANGERVILLE ME 04479 207 876 3541 FAX 207 876 3566 Model 50 Automatic Numbering Machines PARTS LIST Model 50 Automatic Numbering Machines PARTS LIST For 1 32 Through 1 8 Character Sizes 50 15 1 Frame Refer to Factory for Replacement 50 15 2 Actuating Arms w Cross Head amp A Pawl q i 50 15 3 Arm Bar o 50 15 4 Actuating Arms Stop Pins 2 reg d 50 15 5 Actuating Arm Stop Pin Screws 2 req d 50 15 6 Coil Return Spring 2 reg d 50 15 7 Coil Return Spring Pins 2 reg d 50 15 8 Coil Return Spring Screws 2 reg d 59 15 9 Actuating Pawl Shaft 50 15 10 Actuating Pawl Std 4 or 6 Wheels 50 15 17 Actuating Paw Spring 50 15 18 Wheel Shaft standard 50 15 19 Wheel Shaft Model 250 hollow 50 15 20 Wheel Shaft Set Screws 2 req d 50 15 21 Retaining Pawls reg or unit 50 15 22 Retaining Pawl Shaft 50 15 23 Pawl Block 50 15 24 Pawl Block Screws 2 reg d 50 15 25 Retaining Paw Spring 50 15 25A Retaining Pawl Spring Screws oe 50 15 26 Wheels as per price list specify Reg or Unit 50 15 32 Hot Stamping Electrical Parts Assembly 50 15 33 Heater 50 15 34 Cord and Switch 50 15 35 Coil Spring Protector 50 15 36 Insulation Plastic amp Fibre Glass 50 15 37 Coil Return Spring Rollers 2 re
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